PURE CLIENT-SIDE 64-BIT WEB AUDIO DSP
The In-Browser Neural Mastering Lab
Test Capter's proprietary 5-stage analog neural mastering chain live on your tracks. Zero installs, zero server upload latency, 100% private in-browser processing.
Drop your track here, or click to browse
Supports WAV, MP3, FLAC, M4A, OGG • Audio never leaves your device
Or load high-res stems:
Real-Time FFT Spectrum Analyzer (20Hz - 20kHz)
NEURAL DSP MASTER
Lissajous Stereo Phase Vectorscope
PHASE: COHERENT
Mastering Target Presets
Billboard Heavy
-8 LUFS commercial trap/drill master with sub-808 punch
Streaming Pristine
-14 LUFS Spotify/Apple Music safe true-peak master
1978 Valve Tape
Rich 2nd/3rd order tube harmonics and warm console air
3D Spatial Wide
Expansive Mid/Side soundstage for orchestral & synth
Active Capter Neural DSP Pipeline
Stage 1: 420Hz Sub-Mud Extractor (Zero-Phase Notch)
-2.8 dB
Stage 2: Non-Linear Tube Harmonic Valve (Sigmoid WaveShaper)
WARM TUBE
Stage 3: 12.5kHz Multi-Band Spectral Air Exciter
+3.4 dB
Stage 4: Mid/Side Psychoacoustic Stereo Widener
3D PHASE
Stage 5: Neural Lookahead Limiter & True-Peak Ceiling (-0.2 dB)
ACTIVE
Hear the Difference in Pure 64-Bit?
The browser lab runs on lightweight Web Audio DSP. Inside the standalone CAPTER™ Audio Engine for Windows & Mac, you unlock 38 discrete analog console modules, real neural psychoacoustics, Target SFT vocal cloning, and bare-metal C++ neural acceleration.